If other therapies or treatments for warts removal do not respond positively, then doctors recommend a minor surgery, wherein, the warts tissues are cut off. This is done by using an electric needle, and the process is known as electrodessication and curettage. In this method, there are probable chances of development of scars, post-surgery. In extreme cases, wherein the warts are stubborn enough to resist all kinds of treatments, laser surgery is what doctors opt for.